| 摘要 |
PURPOSE:To uniformly execute treatment with gas and to efficiently manufacture metal kind non-oxide ferromagnetic powder by executing gas venting treatment to the powder while giving the powder to be treated vibration. CONSTITUTION:The powder to be treated charged in a cylindrical reacting vessel 3 is heated with a heater 5 arranged between a heat holding material 4 and the reacting vessel 3 to the prescribed temp. The gas is vented from a gas introducing pipe 6 through a dispersing plate 8 at bottom part of this reacting vessel 3 to exhaust the gas from an exhaust pipe 7. By this method, the venting treatment is executed to the above powder to obtain the metal kind non-oxide ferromagnetic powder. Then, the venting treatment is executed while giving the above powder vibration with a vibrating generator 2. As the above powder, oxy-iron oxide powder or ion oxide powder, reducing iron powder, iron nitride powder, iron carbide powder, etc., is used. Further, as the venting gas, hydrogen gas, mixed gas of ammonia and hydrogen, carbon monoxide gas, etc., is used. By this method, the venting treatment is uniformly executed and the ferromagnetic powder can be obtd. with good efficiency. |
